Jacquard embroidering-machine.



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'N0.'785,169. PATENTED MA'R.21,1905.

7L. HERZOG.

JACQUARD 'EMBROIDERING MACHINE. APPLICATION FILED AUG. 4, 1903.

5 SHEETS-SHEET 1.

[raven/5021' I No..785,169. PATBNTED MAR.21,1905. L. HERZOG.

' JAGQUARD EMBROIDERING MACHINE.

APPLICATION FILED AUG. 4, 1903.

5 BHEET8-SHEBT 3.

Wines;

No. 785,169. PATENTEDMAR. 21, 1905.

L. HERZOG.

JAGQUARD EMBR'OIDERING MACHINE APPLICATION rum) AUG. 4, 1-903.

5 SHEET S SEEBT 4- liirzeyses NTTED STATES Patented March 21, 1905.

PATENT OFFICE.

LOUIS HER-ZOG, OF RORSOHAOH, SWITZERLAND, ASSIGNOR TO THE FIRM OF STIOKEREI FELDMUHLE, VORMALS LOEB, SOHOENFELD & 00., OF

RORSOHACH, SWITZERLAND.

JACQUARD ElVlBROlDERlNG-MACHINE.

SPECIFICATION formingpart of Letters Patent No. 785,169, dated March 21, 1905. Application filed August 4, 1903. Serial No. 168,226. I

T 40% whom, it 17111.7 concern.

Be it known that I, LoUIs I-Innzoo, a citizen of the Republic of Switzerland, residing at Rorschach, Switzerland, have invented new and useful Improvements in Jacquard Embroidering-Machines, of which the following is a specification.

In embroidering-machines of the kind, for instance, disclosed in British Letters Patent No. 21,361, A. D. 1894:, the embroideringframe is adjusted by a acquard-card which couples singly vertical slide-frames moved by a stepped lever and connecting-rods, with horizontal slide-frames having coupling-rods I5 and acting on a double rack-gear. In such machines it frequently happens that if there is an incorrect or redundant hole in the pattern-card then instead of only a single vertical slide-frame two of such frames will be coupled or advanced simultaneously with one and the same horizontal slide-frame, the result being injury to the machine and temporary breakdown. In order to overcome this drawback, such machines have been provided with a device by means of which immediately that part of the card with the incorrect hole meets the jacquard-needles which effect the coupling of the slide-frames the automatic device is stopped. This device,

however, is extremely defective, is subject to great wear and tear, and thus soon fails to act. Il then there is a surplus hole in the pattern-card, causing false coupling of the horizontal slide-frame, it is obvious that if 3 5 thestop device fails to operate, and since the vertical slide-frames joined to the stepped lever by the rigid connecting-rods have an unequal throwthat is, have connecting rods of unequal,lengthtension results between the various moving arts, rendering continued working impossib e, the result be ing that either the stepped lever fractures or the coupling and connecting rods are broken, necessitating extensive repairs.

The subject of my invention is an automatic regulating device for the connectingrods in jacquard embroidering-machines,

whereby the rods connecting the stepped lever with the vertical slide-frames are springcontrolled in such manner that the tension arising between the stepped lever and the slide-frames on false coupling of the vertical with the horizontal slide-frames can be re moved by the spring control of the connecting-rods being overcome, whereby injury to the machine and consequent breakdown is avoided.

My invention is illustrated by the accompanying drawings, in which- Figure 1 is a vertical sectional view showing the apparatus with the connecting-rods in their rearward position. Fig. 2 is a vertical section on the line A B of Fig. 1. Fig. 2 is a section on the line C D of Fig. 1, drawn to an enlarged scale. Fig. 3 is a sectional planview of Fig. 1, taken on the line EF. Fig. 4 is a vertical sectional view showing a portion of Fig. 1, the connecting-rods being in their forward position. Figs. 5 and 6 are detail views, drawn to an enlarged scale, of modified constructions of the invention to be hereinafter referred to.

The stepped lever 2 is mounted on the shaft 1, having its bearings in the main fram ing, and has an arm 3 cooperating with the cam-disk 5, mounted 011 the driving-shaft 4, whereby reciprocating motion is imparted to the stepped lever. The latter is connected by rods 6 7 to the seven vertical slide-frames 8, each provided with four vertical lockingrods 9, each of which has a lateral stop 10. Opposite the vertical slide-frames lie four horizontal slide-frames 1 1, to each of which seven parallel coupling-rods 12 are secured. Each four superposed rods 12 lie adjacent to a slide 8, and the front end of each is recessed at 13 to fit the stop 10, located below it, Figs. 1, 2, and 3. 1

The jacquard-card 15, perforated in the usual manner, runs over the cylinder 14. The jacquard-needles 16 actuate the slide-plates 17, which are raised and lowered by the rocking bars 18. To each slide-plate 17 alifter is coupled, and on each of thelatter one of the locking-bars 9 is suspended by means of claw 20. The slides 1 1 are provided with racks 2],

meshing alternately with cylindrical pin ions 22, whereby the embroidering-frame is operated. The construction and operation of the said parts are the same as described in British Letters Patent No. 21,361, A.D. 1894.

To the rods 6 are pivoted the forked ends of the links 23, the other ends of the latter being pivoted to the corresponding step of the lever 2. The rods 6 are provided with springs 24, the free ends of which enter notches 26 in the forked ends of the links 23, thus rigidly connecting the two parts 6 23. The r0 7 consists of a single piece.

Suppose now for the reasons already stated two of the slides 8 become coupled with the same slide 11 simultaneously. In Fi 4, for example, the front and the antepemiltimate slide 8 are shown so coupled. Since the thrust of the front slide 8that is, of the rod 7 is greater than that of the antepenultimate slide 8that is, of the rod 6and since the length of this latter is greater than that of the rod 7 it is obvious that when the stop device fails to act the said antepenultimate slide 8 is compelled to make the same stroke as the front slide 8, which is coupled to it by the antepenultimate rod 12. The result will be that the composite member 6 23 will bend at its joint, the end 25 of the spring 24 leaving the notch 26, so that the bar 6 takes up the position shown in Fig. 4. The same will also be the case with the other rods 6, so far as they come in question in like cases.

In the modified form of construction shown in Fig. 5 the rods 6 are connected to the lever 2 by means of spiral springs 27 and pivotal plates 28. The tension arising between the longer and shorter connecting-rods on false coupling of the slides occurring is in 7 this case taken up by the springs 27.

In the modification shown in Fig. 6 the rods 6 are made in one piece and their ends recessed at 29, so as to receive the pins 30 on the steps of the lever 2. In the slots pawls 32 are located, pressed down into the gaps 29 by springs 31. In the case in question the third rod 6 in consequence of false coupling of its slide in spite of its different length has had to pass over the same distance as the front rod 7. This has been possible owing to the arrangement of the spring-pawl above mentioned, which on further advance of the rod 6 has been raised by a pin 30, so that the rod 6 has been able to travel farther beyond the pin 30.

By the provision of these automaticallyregulating connecting-rods all breakdowns of the machine occurring through defects in the jacquard-cards are prevented and the expense of repairs saved.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. In a jac uard embroidering-machine, the horizontal s ide-frames, the vertical slideframes, the jacquard mechanism and the coupling members connecting the said horizontal and vertical frames, in combination with the stepped lever and rods connecting the same with the vertical frames, said connectin -rods provided with means to automatica y adjust their effective length, whereby in the event of false coupling of the said vertical and horizontal frames, injury to the machine is prevented, substantially as set forth.

2. In a j ac uard embroidering-machine, the horizontal s ide-frames, the vertical slideframes, the acquard mechanism and the coupling members connecting the said horizontal and vertical frames, in combination with a stepped lever and links connecting the same with the vertical frames, said links consisting of two pivoted parts and a leaf-spring to control the joint at the pivot to admit of the links bending in the manner of a toggle, substantially as set forth.

3. In a jacquard embroidering-machine, the combination with slides, of a stepped lever, links connecting the steps of said lever and slides, and means to automatically adjust theeffective lengths of the links when two or more slides have the same travel, substantially as described.

4. In a jacquard embroidering-machine, the combination with vertical slides, of a stepped lever, a rigid link connecting one of the slides to the lever, and a link connecting each of the other slides to the lever and having means to automatically adjust the efiective length of said link, substantially as described.

5. In a acquard embroidering-machine, the combination with slides each having a different travel from the others, of a stepped lever, a rigid link connecting that slide having the greatest travel with the lever, and a link connecting each of the other slides with its respective step on said lever, each of said last-named links having means to automatically adjust its effective length, substantially as described.

6. In a jacquard embroidering-machine, the combination with slides and a stepped lever, of a rigid link connecting the slides having the longest movement with the lever, and a short link pivoted to a long link and a leafspring to yieldingly hold the two links to move a as a unit, a pair of said links connecting each of said slides to the stepped lever, substantially as described.

7. In a jacquard embroidering-machine, the combination with slides, of a stepped lever, a rigid link connecting that slide having the greatest travel with the lever and each of the otherislidesjconnected Qto said lever by name to this specification in the presence of a short link hinged to a long link, the short two subscribing Witnesses.

link having a notch in its hinge end proximate the long link, a spring secured to the LOUIS RZOG 5 long link to normally engage said notch, subl/Vitnesses:

stantially as described. MORITZ VEITH,

In testimony whereof I have signed my A. LIEBERKNEOHT. 

